👉 In microbiology and biochemistry, a pseudomonas is a type of bacteria that differs from other bacteria in terms of its cell wall structure. Unlike gram-negative bacteria (e.g., E. coli) which have cell walls made up of phospholipids, pseudomembranes are composed of hydrophilic lipids instead. This means that the cell membrane of a pseudomonas is less permeable to water than that of gram-negative bacteria. Pseudomonas species can be